don't need to rescue Exception in this case

actionview/lib/action_view/helpers/debug_helper.rb

@@ -26,7 +26,7 @@ module ActionView
         Marshal::dump(object)
         object = ERB::Util.html_escape(object.to_yaml)
         content_tag(:pre, object, :class => "debug_dump")
-      rescue Exception  # errors from Marshal or YAML
+      rescue # errors from Marshal or YAML
         # Object couldn't be dumped, perhaps because of singleton methods -- this is the fallback
         content_tag(:code, object.inspect, :class => "debug_dump")
       end

actionview/test/activerecord/debug_helper_test.rb

@@ -1,8 +1,14 @@
 require 'active_record_unit'
+require 'nokogiri'
 
 class DebugHelperTest < ActionView::TestCase
   def test_debug
     company = Company.new(name: "firebase")
     assert_match "name: firebase", debug(company)
   end
+
+  def test_debug_with_marshal_error
+    obj = -> { }
+    assert_match obj.inspect, Nokogiri.XML(debug(obj)).content
+  end
 end